A guy who derives pleasure from running around sniffing girls' bicycle seats. (Not to be confused with a "twerp").
"Do you know what a twerp is? When I was in Shortridge High School in Indianapolis 65 years ago, a twerp was a guy who stuck a set of false teeth up his butt and bit the buttons off the back seats of taxicabs. (And a snarf was a guy who sniffed the seats of girls' bicycles.)
Snarf was Lion-O's "nursemaid" on Thundera, and he has a hard time dealing with the fact that Lion-O is no longer in need of his "protection". Although he's somewhat cowardly, Snarf does manage to gather his wits and help when needed.
Snarf, where is my bed pan? i'm going to piss the bed soon